Bitconnect looked like a pyramid scheme from early on, and it had a ton of warning signs. If you missed the fact even a ton of people on youtube told everyone that bit connect was a scam, so you didn't even need to notice it yourself.
I want to know why people got involved while knowing that it was a HORRIBLE scam from early on?
I think many people were in denial/were blinded by greed about the fact that it was a ponzi scheme and they wanted to make a quick buck after they saw everyone else making a lot of money from other ICO's. Furthermore, bitconnect was being pushed by many so called youtube "influencers" who managed to convince many people to invest into it.